What is the similarity between trenches and subduction zones?

What process allows for the development of haploid sex cells? mitosis meiosis fertilization pollination

Which component in a graph indicates an independent factor? a. y-axis b. x-axis c. scale

Which of the following statements is true about the relationship between genetic variation and natural selection? a. genetic variation must be present in a population before natural selection can act on it. b. genetic variation arises in a population as a result of natural selection. c. natural selection can act on a population whether there is genetic variation within the population or not. d. after natural selection acts on a population, the amount of genetic variation in the population always increases.